CN105505165A - Scratch-resistant double-component waterborne glossy varnish and preparation method thereof - Google Patents
Scratch-resistant double-component waterborne glossy varnish and preparation method thereof Download PDFInfo
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D175/00—Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
- C09D175/04—Polyurethanes
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/40—High-molecular-weight compounds
- C08G18/62—Polymers of compounds having carbon-to-carbon double bonds
- C08G18/6216—Polymers of alpha-beta ethylenically unsaturated carboxylic acids or of derivatives thereof
- C08G18/622—Polymers of esters of alpha-beta ethylenically unsaturated carboxylic acids
- C08G18/6225—Polymers of esters of acrylic or methacrylic acid
- C08G18/6229—Polymers of hydroxy groups containing esters of acrylic or methacrylic acid with aliphatic polyalcohols
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/70—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the isocyanates or isothiocyanates used
- C08G18/72—Polyisocyanates or polyisothiocyanates
- C08G18/77—Polyisocyanates or polyisothiocyanates having heteroatoms in addition to the isocyanate or isothiocyanate nitrogen and oxygen or sulfur
- C08G18/78—Nitrogen
- C08G18/79—Nitrogen characterised by the polyisocyanates used, these having groups formed by oligomerisation of isocyanates or isothiocyanates
- C08G18/791—Nitrogen characterised by the polyisocyanates used, these having groups formed by oligomerisation of isocyanates or isothiocyanates containing isocyanurate groups
- C08G18/792—Nitrogen characterised by the polyisocyanates used, these having groups formed by oligomerisation of isocyanates or isothiocyanates containing isocyanurate groups formed by oligomerisation of aliphatic and/or cycloaliphatic isocyanates or isothiocyanates
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/47—Levelling agents
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/65—Additives macromolecular
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
- C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
Abstract
The invention belongs to the field of coatings and relates to double-component waterborne glossy varnish and a preparation method thereof, in particular to scratch-resistant double-component waterborne glossy varnish and a preparation method thereof. The double-component waterborne glossy varnish comprises a component A and a component B, wherein the component A comprises hydroxyl polyacrylate containing secondary dispersoid, waterborne polyurethane dispersoid, a defoaming agent, a coalescing agent, a wax emulsion, a leveling agent, a thickener and water; the component B comprises propylene glycol diacetate and hydrophilic aliphatic polyisocyanate containing hexamethylene diisocyanate. The varnish has the characteristics of excellent glossiness, high fullness, good varnish film surface effect and the like and also has outstanding scratch resistance.
Description
Technical field
The invention belongs to paint field, relate to a kind of double-component aqueous glossy varnish, also relate to its preparation method.
Background technology
In recent years, along with the continuous enhancing of people's awareness of environment protection and health, the environmental regulation of various countries is increasingly harsh to the restriction of VOC; Substitute the oiliness woodwork coating of high pollution with the water-borne wood coating of environmental type, just gradually become the important directions of woodwork coating development.
But in China, most people selects the standard of furniture, or to pass judgment on the criterion of furniture surface oil paint coating effect.And in water-based painting effect, high gloss, high fullness ratio, high rigidity, many etc. a series of effect poorer than oiliness painting effect, particularly paint film adhesion strength is poor, and some Furniture Factories are for pursuing high gloss, polished finish is carried out to paint film, but original paint is easily scratched, and affects painting effect; And part water-based application furniture, easily scratched, affect aesthetic conceptions, thus cannot meet the demand of client, this brings a difficult problem to water-based paint development, and this also increases the heavy burden of environment indirectly.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of double-component aqueous glossy varnish of anti scuffing, and its preparation method is provided, this double-component aqueous glossy varnish is except having excellent gloss, high fullness ratio, outside the features such as coating surface is effective, have more outstanding adhesion strength.
Technical problem to be solved by this invention is achieved by the following technical programs:
A kind of scratch resistant bi-component waterborne glossy varnish, comprises first component, second component, it is characterized in that: described first component is made up of the component of following weight percent:
Hydroxyl polyacrylic ester twice dispersing body 65%-80%,
Aqueous polyurethane dispersion 10%-20%,
Defoamer 0.1%-0.5%,
Film coalescence aid 1%-4%,
Wax emulsion 3%-5%,
Flow agent 0.1%-0.5%,
Thickening material 0.1%-0.5%,
Water 2%-10%,
In above first component, the mass percent sum of each component is 100%;
Described second component is made up of the component of following weight percent:
Propylene-glycol diacetate 5%-25%,
Containing the hydrophilic aliphatic polymeric polyisocyanate 75%-85% of hexamethylene diisocyanate,
In in above second component, the mass percent sum of each component is 100%.
Further, described aqueous acrylic emulsion is hydroxyl polyacrylic ester twice dispersing body, hydroxyl >=3.0, preferred Bayer Bitterfeld GmbH produce 2651, Bayer Bitterfeld GmbH 2770 or the New Zealand Niu Peisi that produce produce 6516.
Further, described aqueous polyurethane dispersion refer to can with acrylic resin consistency better and the good polyurethane dispersions of transparency, the R2810 that 4210 or Dutch DSM that preferred Yantai ten thousand China produces are produced.
Further, described wax emulsion, preferably has the oxidized polyethlene wax of high gloss, Poly Propylene Wax, tetrafluoroethylene wax, at least one in paraffin wax emulsions, and preferred american wheat can the ME39235 of pupil's product or the MD-2200 of German KEIM-ADDITEC production.
Further, described flow agent refers to polyether modified siloxane, the BYK346 that Tego410, German Bi Ke that preferred German enlightening height is produced produce or the modest W-461 of moral.
Further, described film coalescence aid, dipropylene (DPnB), propylene glycol monobutyl ether (DPM) that preferred LG-DOW is produced.
Further, described first component mixes with the equivalence ratio of second component according to n (-NCO): n (-OH)=1.5 ~ 1.8.
In addition, described defoamer comprises polysiloxane, organic modified polyorganosiloxane, aerosil modified polyether siloxanes, polyether silicone, the BYK-028 that preferred German Bi Ke produces or the Tego902W that German enlightening height is produced.Described thickening material comprises polyamide wax, the swelling acrylate of alkali, polyurethane associative thickener, the RM2020 that preferred ROHM AND HAAS Chemical Co., Ltd. produces or the WT-105A etc. that this Chemical Co., Ltd. of hamming produces.Water is pure water or deionized water.Propylene-glycol diacetate is the PGDA produced by LG-DOW.Modification HDI polyisocyanates is the hydrophilic aliphatic polymeric polyisocyanate containing hexamethylene diisocyanate (HDI), the BayhydurXP2655 that preferred Bayer Bitterfeld GmbH is produced.In the present invention, the code of related substance is the commercial product code of producer or commercially available prod, special instruction.
Present invention also offers the preparation method of above-mentioned a kind of scratch resistant bi-component waterborne glossy varnish, wherein the preparation process of first component is:
A, in dispersion cylinder, first add hydroxyl polyacrylic ester twice dispersing body and polyurethane dispersions in first component, then add defoamer with 1200-1500 rev/min, dispersed with stirring 5 minutes is to evenly;
B, add film coalescence aid, wax emulsion, flow agent successively in step, with 800-1200 rev/min, dispersed with stirring 5-10 minute to evenly;
C, in step B, add water and thickening material regulates finish paint viscosity to 18s-25s, with 800-1200 rev/min dispersed with stirring 5-10 minute to refiltering after evenly, packing;
The preparation method of second component:
Glycol diacetate is added in modification HDI polyisocyanates, stir.
The present invention is when constructing, first component is mixed with the equivalence ratio of second component according to n (-NCO): n (-OH)=1.5 ~ 1.8, add a certain amount of water again, and after adjusting to applicable working viscosity, just can construct, the paint film of physical and chemical performance and decorate properties excellence after drying, can be obtained.
Compared with prior art, the different prior art part of the present invention is:
One, select high hydroxyl acrylic twice dispersing body, be its can with the crosslinking reaction of the modification HDI polyisocyanates generation degree of depth, namely in resin Composition-OH and curing agent component in-NCO reacts and generates ammonia ester bond, obtain fine and close film effect, improve the hardness of paint film simultaneously.Simultaneously in solidifying agent selection, the BayhydurXP2655 that Bayer Bitterfeld GmbH is produced also improves the gloss of paint film.
Its two, select with acrylic resin consistency better and the good polyurethane dispersions of transparency, utilize the feature of urethane slow curing, extend the open hour of paint film.When not affecting system gloss, improving the surface effect of paint film, eliminating the pin hole that paint film easily occurs, prickly heat phenomenon, improve paint film fullness ratio simultaneously.The wear resistance that the wear resistance of urethane compares ACRYLIC EMULSION is good, also can improve the adhesion strength of paint film in system.
Its three, select the oxidized polyethlene wax with high gloss, Poly Propylene Wax, tetrafluoroethylene wax, at least one in paraffin wax emulsions, this auxiliary agent, in system, significantly improves the paint film feel of bi-component waterborne glossy varnish and surperficial scratch resistance effect while guarantee high gloss.
Its four, select the modified organic silicon auxiliary agent with adhesion strength, the polyether modified siloxane that namely hydrophilicity is good, while levelling effect is provided, improves the scratch resistance effect of paint film.
Specific embodiment mode
Of the present invention main from the viewpoint of four, solve the scratch resistant problem of water-based glossy varnish, make film have conventional high rigidity, high gloss, high fullness ratio, the features such as coating surface is effective simultaneously.
Below in conjunction with embodiment, content of the present invention is described in further detail.Embodiment is only the preferred embodiment of the present invention, is not limitation of the invention.
Table 1: embodiment 1-5 fills a prescription
The preparation method of above embodiment is:
The preparation method of first component is as follows:
A, in dispersion cylinder, first add hydroxyl polyacrylic ester twice dispersing body and aqueous polyurethane dispersion in first component, then add defoamer with 1200-1500 rev/min, dispersed with stirring 5 minutes is to evenly;
B, add film coalescence aid, wax emulsion, flow agent successively in step, with 800-1200 rev/min, dispersed with stirring 5-10 minute to evenly;
C, in step B, add water and thickening material regulates finish paint viscosity to 18s-25s, with 800-1200 rev/min dispersed with stirring 5-10 minute to refiltering after evenly, packing.
The preparation method of second component is as follows:
Glycol diacetate is added in modification HDI polyisocyanates, stir.
Example 1:
Prepare scratch resistant bi-component waterborne glossy varnish: by first component with second component according to n(-NCO): the NCO/OH equivalence ratio of n (-OH)=1.6 mixes, leave standstill 5min.
Example 2:
Prepare scratch resistant bi-component waterborne glossy varnish: by first component with second component according to n(-NCO): the NCO/OH equivalence ratio of n (-OH)=1.5 mixes, leave standstill 5min.
Example 3:
Prepare scratch resistant bi-component waterborne glossy varnish: by first component with second component according to n(-NCO): the NCO/OH equivalence ratio of n (-OH)=1.7 mixes, leave standstill 5min.
Example 4:
Prepare scratch resistant bi-component waterborne glossy varnish: by first component with second component according to n(-NCO): the NCO/OH equivalence ratio of n (-OH)=1.8 mixes, leave standstill 5min.
Example 5:
Prepare scratch resistant bi-component waterborne glossy varnish: by first component with second component according to n(-NCO): the NCO/OH equivalence ratio of n (-OH)=1.7 mixes, leave standstill 5min.
Reference examples:
The formula of reference examples is as follows:
First component:
Hydroxy polyacrylate twice dispersing body (2651): 80%
Defoamer (BYK-028): 0.3%
Film coalescence aid (DPnB): 3%
Flow agent (BYK-346): 0.4%
Thickening material (RM2020): 0.3%
Water (tap water): 2.1%
Second component:
Propylene-glycol diacetate (PGDA): 15%
Modified isocyanate (BayhydurXP2655): 85%
The preparation method of first component is as follows:
A, in dispersion cylinder, first add hydroxyl polyacrylic ester twice dispersing body in first component, then add defoamer with 1200-1500 rev/min, dispersed with stirring 5 minutes is to evenly;
B, add film coalescence aid, flow agent successively in step, with 800-1200 rev/min, dispersed with stirring 5-10 minute to evenly;
C, in step B, add water and thickening material regulates finish paint viscosity to 18s-25s, with 800-1200 rev/min dispersed with stirring 5-10 minute to refiltering after evenly, packing.
The preparation method of second component is as follows:
Glycol diacetate is added in modification HDI polyisocyanates, stir.
Prepare scratch resistant bi-component waterborne glossy varnish: by first component with second component according to n(-NCO): the NCO/OH equivalence ratio of n (-OH)=1.8 mixes, leave standstill 5min.
The test result of embodiment 1-5 and reference examples is in table 2
To sum up test result, can find out that a kind of scratch resistant bi-component waterborne glossy varnish of the present invention has excellent adhesion strength, high gloss, high rigidity, high fullness ratio and the feature such as coating surface is effective.Correlated performance meets " GBT23999-2009 indoor decorating use woodwork coating " and " HJ/T201-2005 environmental labelling product technical requirements water-borne coatings " standard.
Claims (8)
1. a scratch resistant bi-component waterborne glossy varnish, comprises first component, second component, it is characterized in that: described first component is made up of the component of following weight percent:
Hydroxyl polyacrylic ester twice dispersing body 65%-80%,
Aqueous polyurethane dispersion 10%-20%,
Defoamer 0.1%-0.5%,
Film coalescence aid 1%-4%,
Wax emulsion 3%-5%,
Flow agent 0.1%-0.5%,
Thickening material 0.1%-0.5%,
Water 2%-10%,
In above first component, the mass percent sum of each component is 100%;
Described second component is made up of the component of following weight percent:
Propylene-glycol diacetate 5%-25%,
Containing the hydrophilic aliphatic polymeric polyisocyanate 75%-85% of hexamethylene diisocyanate,
In in above second component, the mass percent sum of each component is 100%.
2. scratch resistant bi-component waterborne glossy varnish according to claim 1, is characterized in that: described hydroxyl polyacrylic ester twice dispersing body, hydroxyl is >=3.0.
3. scratch resistant bi-component waterborne glossy varnish according to claim 1, is characterized in that: described wax emulsion is selected from oxidized polyethlene wax, Poly Propylene Wax, tetrafluoroethylene wax, at least one in paraffin wax emulsions.
4. scratch resistant bi-component waterborne glossy varnish according to claim 1, is characterized in that: described flow agent is polyether modified siloxane flow agent.
5. scratch resistant bi-component waterborne glossy varnish according to claim 1, is characterized in that: described film coalescence aid is dipropylene and/or Dipropylene glycol mono-n-butyl Ether.
6. scratch resistant bi-component waterborne glossy varnish according to claim 1, is characterized in that: described first component mixes with the equivalence ratio of second component according to n (-NCO): n (-OH)=1.5 ~ 1.8.
7. prepare a method for any one scratch resistant bi-component waterborne glossy varnish in claim 1-6, it is characterized in that, the preparation method of first component:
A, in dispersion cylinder, first add hydroxyl polyacrylic ester twice dispersing body and aqueous polyurethane dispersion in first component, then add defoamer high-speed stirring and disperse 5 minutes to evenly;
B, add film coalescence aid, wax emulsion, flow agent successively in step, moderate-speed mixer dispersion 5-10 minute is to evenly;
C, in step B, add water and thickening material regulates finish paint viscosity to 18s-25s, moderate-speed mixer dispersion 5-10 minute is to refiltering after evenly, packing;
The preparation method of second component:
Propylene-glycol diacetate is added in the hydrophilic aliphatic polymeric polyisocyanate containing hexamethylene diisocyanate, stir.
8. the preparation method of scratch resistant bi-component waterborne glossy varnish according to claim 7, is characterized in that: the speed of described high-speed stirring dispersion is 1200-1500 rev/min, and the speed of moderate-speed mixer dispersion is 800-1200 rev/min.
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| CN106590386A (en) * | 2016-12-13 | 2017-04-26 | 君子兰化工（上海）有限公司 | Waterborne double-component scratch-resistant brilliant white paint |
| CN106978075A (en) * | 2017-05-11 | 2017-07-25 | 深圳市清弘环保科技有限公司 | White wood wax oil of a kind of environment-friendly spray coating type and its preparation method and application |
| CN107099232A (en) * | 2016-09-19 | 2017-08-29 | 立邦涂料（中国）有限公司 | A kind of transparent urethane composition and preparation method with visual gel feature |
| CN107099233A (en) * | 2016-09-19 | 2017-08-29 | 立邦涂料（中国）有限公司 | A kind of stable woodenware aqueous polyurethane composition of performance in pot-life |
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